Pioneer - A-331 Solid state amplifier

Pioneer amplifier A-331 in very good condition, tested and fully functional.
Very few signs of use
Was stored for 25 years packed in a wardrobe.
Comes well packed and insured.
Please examine the pictures carefully so there are no misunderstandings later.

Manufacturer: Pioneer
Model: A-331
Year of manufacture: 1987
Made in: Japan
Type: Integrated amplifier
Remote control: No
Power consumption: 410 W (max)
Dimensions: 420 x 352 x 126 mm
Weight: 6.9 kg
Color: black

Connections

Number of inputs:
1x Phono (RCA): 2.5 mV / 50 kOhm (MM)
CD, Tuner, Line, 1x Tape In (RCA): 150 mV / 40 kOhm
Number of outputs:
1x Tape Out (RCA): 150 mV / 2.2 kOhm
Headphones (6.3 mm jack)
2 speaker pairs (binding posts)

Technical data

Continuous output power (at distortion)
8 Ohm: 2x 40 W
4 Ohm: 2x 50 W
Dynamic power
8 Ohm: 55 W
4 Ohm: 90 W
Total harmonic distortion
0.02% (20 Hz - 20 kHz, 40W, 8 Ohm)
0.03% (20 Hz - 20 kHz, 50W, 4 Ohm)
Frequency response:
PHONO (MM) 20 Hz to 20 kHz ± 0.3 dB
CD, TUNER, LINE, TAPE 5 Hz to 100 kHz +0 dB / -3 dB
Stereochannel separation:
Signal-to-noise ratio
Phono (MM, 5mV input): 89 dB
CD, Tuner, Line, Tape: 108 dB
Damping factor:
Tone control: analog (-30 dB)
Bass: ±8 dB (100 Hz)
Treble: ±8 dB (10 kHz)
Loudness: yes, button (+5 dB - 100 Hz / +3 dB - 10 kHz)

Special features

Recording select switch
Speaker pairs and headphones are switched via relays
Metal front panel
Phono input MM
Adapter sockets - for inserting an equalizer (shipped bridged by default)